Official GTX 680 overclocking Thread!

Don't worry about Furmark, that is a totally unrealistic scenario. Set a clock speed and then you can do a quick check with Heaven to see if it passes. If it does, then try some games. It'll take time to lock in the right clock speed. Also, try upping the core and memory a little bit each time together so it stays balanced. You don't really want a huge memory overclock right away, because that may be causing instability and limiting your core overclock. Something like +100/+300 should be pretty do-able.
 
Forceman said:
Don't worry about Furmark, that is a totally unrealistic scenario. Set a clock speed and then you can do a quick check with Heaven to see if it passes. If it does, then try some games. It'll take time to lock in the right clock speed. Also, try upping the core and memory a little bit each time together so it stays balanced. You don't really want a huge memory overclock right away, because that may be causing instability and limiting your core overclock. Something like +100/+300 should be pretty do-able.
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i tried running heaven with +39 offset which result in a 1267 boost clock on with the default mem clock . but heaven keeps crashing. ie the driver stops responding. and my temps only go up to like 58 and and tdp is like 82. :( i tried increasing the tdp as well but i dont think its going to do anything since my tdp doesnt go over 100 anyway
 
fatal error D3D11AppWindow::swap_window():device removed. got this during 3rd loop of unigine :/
 
incep7ion said:
hey guys, so i have an asus gtx 680 directcu ii top but for some reason it would not overclock at all. well it does but unigine heaven keeps crashing. i tried putting max tdp to 159 but it didnt work at all. with card except in furmark which i ran for 15 minutes with 1261 boost clock and 6600 mem the tdp went to 115 percent.but in unigine power only goes up to like 82%. avp bench worked fine for 1300 boost clock with 6800 mem but unigine and furmark crashes. tried c2 bench that worked fine for 1267 and 6800 as well. i dont get this unigine crap.

my specs are
i7 930 @ 4.0
12gb dominator @ 8-8-8-24
asus gtx 680 directcu ii top
corsair hx 850
cm haf 932
ocz vertex 4
wd blue 500
wd black 750
wd black 1tb
Click to expand...

Better than mine. :(
 
If you want to overclock and atleast reach 1300Mhz+ on the core get a MSI GTX680 Lighting. Only problem now is that nvidia restricted MSI from overvolting the chip so high and have limited it. As the gathered from another forum the following:

"So while everything as described above is possible it in the end means that only the first batch of 5000 cards will have an OLD Bios that is freed up from the limitation and thus allows voltage tweaking to a certain extent. We can only assume that the old BIOS will spread like a virus to current Lightning owners to give them a little more flexibility on voltage tweaking matters. However you'd also need a special MSI AfterBurner build to support it."
Guys to be clear, you'd need the old BIOS and a special (unreleased) version of AfterBurner. That last one in particular is in control of MSI.

If you buy a new GTX680 Lighting you might only barely reach 1300Mhz on the core on the restricted bios.
 
incep7ion said:
i tried running heaven with +39 offset which result in a 1267 boost clock on with the default mem clock . but heaven keeps crashing. ie the driver stops responding. and my temps only go up to like 58 and and tdp is like 82. :( i tried increasing the tdp as well but i dont think its going to do anything since my tdp doesnt go over 100 anyway
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Well, 1267 isn't a terrible result for the clock speed actually - sounds like the card is factory overclocked about as far as it can go. And go ahead and keep the power limit increased - it doesn't hurt anything, and it can prevent throttling in some instances.
 
well im going to give up on overclocking the core clock for now. gonna see how high i can go with the memory clock. tried 6800mhz but unigine gave me artifacts like after 30 minutes fml. testing 6700 now.

6700 gave me artifacts n heaven after 30 minutes. what the faaaark!! :/

tried 6400 artifacts in 15 minutes. i dont know whats going on :/
 
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incep7ion said:
well im going to give up on overclocking the core clock for now. gonna see how high i can go with the memory clock. tried 6800mhz but unigine gave me artifacts like after 30 minutes fml. testing 6700 now.

6700 gave me artifacts n heaven after 30 minutes. what the faaaark!! :/

tried 6400 artifacts in 15 minutes. i dont know whats going on :/
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Some cards just can't overclock. I've hit a wall at 1215/6408
 
well guess what. i was playing crysis 2 for an hour or so on stock settings and i ended up getting artifacts :/ looks like ill have to return the card :(
 
Without sifting through all 29 pages, has anyone else had more success keeping their power target low? I've found if I go over 110% my clocks are less stable. currently at:
110%
+214(can't go a notch higher)
+550(still haven't hit the ceiling)
 
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incep7ion said:
well im going to give up on overclocking the core clock for now. gonna see how high i can go with the memory clock. tried 6800mhz but unigine gave me artifacts like after 30 minutes fml. testing 6700 now.

6700 gave me artifacts n heaven after 30 minutes. what the faaaark!! :/

tried 6400 artifacts in 15 minutes. i dont know whats going on :/
Click to expand...

Preface: I'm not sure of your OC background and such so i'll ask an obvious question.

Are you using manual fan? You can't overclock most of the time with auto fan because your components will get a lot warmer a lot faster. You should always use manual fan when doing overclocks to better dissipate the heat. Its much like overclocking a CPU really - the added speed generates more heat and you have to dissipate it properly. I would suggest manual fan of at least 70% if not higher - it will be noisy but thats the price you pay for overclocking.

Just thought i'd throw that out there if you aren't doing it already - apparently some new OCers (not sure if you are or not) are not aware of this. Auto fan is woefully inadequate for overclocking - case in point, my max load temps with auto fan can be up to 15C higher with auto fan. This is bad for obvious reasons and can definitely create stability issues on certain cards - again, it is very similar to OCing a cpu in that you have to ensure proper heat dissipation.
 
nilkilla said:
Without sifting through all 29 pages, has anyone else had more success keeping their power target low? I've found if I go over 110% my clocks are less stable. currently at:
110%
+214(can't go a notch higher)
+550(still haven't hit the ceiling)
Click to expand...

using 306.02s?
 
xoleras said:
Preface: I'm not sure of your OC background and such so i'll ask an obvious question.

Are you using manual fan? You can't overclock most of the time with auto fan because your components will get a lot warmer a lot faster. You should always use manual fan when doing overclocks to better dissipate the heat. Its much like overclocking a CPU really - the added speed generates more heat and you have to dissipate it properly. I would suggest manual fan of at least 70% if not higher - it will be noisy but thats the price you pay for overclocking.

Just thought i'd throw that out there if you aren't doing it already - apparently some new OCers (not sure if you are or not) are not aware of this. Auto fan is woefully inadequate for overclocking - case in point, my max load temps with auto fan can be up to 15C higher with auto fan. This is bad for obvious reasons and can definitely create stability issues on certain cards - again, it is very similar to OCing a cpu in that you have to ensure proper heat dissipation.
Click to expand...

hey yeah i actually know what im doing when it comes to overclocking :). i was using a gtx 480 overclocked to 800 with a manual fan setup. im sending the card tomorrow because its a faulty one. gives artifacts on stock clocks on both crysis 2 and unigine heaven. something must be up with the memory side of the card.

http://youtu.be/UM_xjWt2UOY
 
Hello everyone! I've bought GV-N680OC-2GD 2 days ago and I can't reach a good OC here

I've had BIOS 80.04.28.00.22 (seems like F3 version). I've reflashed from the start to F92 (80.04.28.00.52). I've expirienced lags and stutters

then I've read the article that if I have F1 so I need to flash F2-F9. So yeah I've flashed F4 as it's latest. Same here still lags and stutters. Then I've flashed to F21 and the lags disappeared

so my boost is max 1215 which is really SAD :( and why do hell 111% Power Target is MAX as I had minimum 122-128% of my previous GTX 670 from Palit...

may be I have a bad card?

used 306.02
 
I don't think its a bad card. For what its worth, my reference 680 overclocking adventures were similar, I couldn't get far - and when I did , I ran into temperature throttling issues over time. I did have luck OCing MSI lightning 680s, but it really is luck of the draw these days
 
my Classified isnt much better - probably getting a second on (without evbot) very soon.

Apparently some Classifies the thermal paste isnt applied very well.
 
genkifd said:
my Classified isnt much better - probably getting a second on (without evbot) very soon.

Apparently some Classifies the thermal paste isn't applied very well.
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Really, what clocks are you getting ? I'm thinking on flashing the bios on mine but I cant seem to find one for the classy.
 
I just saw this and my jaw dropped, once I gave up on pushing my cards further. I'm going to try this tonight when I get home from work. I always felt voltage was holding my cards back. Now I get to see where I can take them with that extra boost.
 
SKL1 said:
Really, what clocks are you getting ? I'm thinking on flashing the bios on mine but I cant seem to find one for the classy.
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currently precision x is set of 131, 85, 500.

reflash the bios is obtained through evga forum. but they havent given to me yet either which i dont mind as i can use my evbot to clock it even higher.

i really want to get full water blocks for my gpus but swiftech version is very limited and isnt very good.
 
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genkifd said:
currently precision x is set of 131, 85, 500.

reflash the bios is obtained through evga forum. but they havent given to me yet either which i dont mind as i can use my evbot to clock it even higher.

i really want to get full water blocks for my gpus but swiftech version is very limited and isnt very good.
Click to expand...

I'll be getting those bios this week, I can send you them if you like.
 
SKL1 said:
I'll be getting those bios this week, I can send you them if you like.
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Please do thanks. just pm me and i will send you my email.

just ordered my second Classified without EVbot (pitty as i cant find any without paying a premium for it).
 
SKL1 said:
I must have the worst Classified ever....1241 max :mad:
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That's sad amigo. Anyway I stuck @1215 with my Gigabyte GTX 680 OC, but I do not feel upset - I just bought another card for SLI and happy with 1215Mhz by Core)))
 
DJ_Casper said:
That's sad amigo. Anyway I stuck @1215 with my Gigabyte GTX 680 OC, but I do not feel upset - I just bought another card for SLI and happy with 1215Mhz by Core)))
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Yeah, this card should have passed as a Classified....sad thing is, I'm stuck with it.
 
when you get the updated bios for the classified you should be up the mhz to around 1300 and with evbot 1400mhz can be had. Not many cards can do these numbers.
 
Can someone tell me how this sounds? I've no experience OC'ing video cards but I understand how to.

I am using afterburner on a reference card.

Power target - 132%
Core clock + 150Mhz
Mem clock + 150Mhz

No artifacts after about a half hour of gameplay in BF3. Temps just under 80.

Are the clocks based off of idle or boost? As in will I always be idle at 1006Mhz and boost up to 1208?
 
Something in the low 1200's, probably.

What is your actual boost speed (not the offset)?
 
Has anyone netted any more performance out of your cards with the extra voltage yet that you care to comment about.

I downloaded the KGB but ended up not finding the backup of my bios that I had made earlier so I put that on hold. I imagine i'll need to reset my boost and wait to see how the card behaves after unlocking and flashing the modded bios on the cards. They may boost much higher and the cards may not necessarily handle the extra boost even with the extra voltage.

I have one card that can do about 1332 on the core and the other sadly can only do about 1215mhz on the core. So I have precision set to not match settings and run each at their full potential. So If I could get both around 1325 or more I would be a happy camper. Ram doesn't go very high on either card though. :(
 
Forceman said:
Something in the low 1200's, probably.

What is your actual boost speed (not the offset)?
Click to expand...

Boost speed is 1059Mhz.

So right now it would be at 1209.

EDIT: I may be missing something here but Forceman, how is your memory clock at 6630?
 
I used the BIOS unlocker and it seems to work so far. I can select 150% in Afterburner now on my vanilla GTX 680s. I need to see if the voltage actually increases and what my results are.
 
Okay, the tool works 100%. I was just testing +150%, +160 core and +250 memory. Both cards are running at 1359MHz on the stock coolers at 1.21v. This is on vanilla EVGA GTX 680s from launch. Awesome!
 
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